Gas sensor and smoke sensor MQ-2 module (OT2014-D52)

This analogue gas sensor has a small heating element with an electronic-chemical sensor. It is suitable for use in buildings and can only provide an accurate reading after the warm-up phase has been completed.Features - Arduino compatible- 100 - 10000 ppm Measuring range- high sensitivity (adjustable via potentiometer)- fast response time- Evaluation of the measured values from the microcontroller (analog)- Setting of the threshold value possible (digital)measurable substances - liquefied petroleum gas (LPG)- i-Butane (C4H10)- propane (C3H8)- methane (CH4)- hydrogen (H2)- alcohol- smokeConnections- VCC: Power supply 5V- GND: Ground connection- AOUT: Analog output- DOUT: Digital outputDimensions- L x W x H: 32 x 20 x 22 mmAttention: The sensor becomes warm during use!